7-A-012: Antennas
7-012A:
A vertical (whip) antenna has a radiation pattern best described by?
A circle
A figure eight
A cardioid
An ellipse
7-012B:
Which of the following statements about a VHF vertical antenna is true?
The longer a VHF antenna the greater the signal gain.
The radiation pattern is a cardioid.
Maximum radiation is directly overhead.
The radiation pattern is a figure eight.
7-012C:
A vertical quarter wave antenna with a good ground connection will:
Radiate omni-directionally
Not function due to being grounded.
Only be used in Satellite communications.
None of these
7-012D:
What is the most common type of antenna for GMDSS MF-HF?
Vertical whip
Horizontally polarized whip antenna
Long wire antenna
None of the above
7-012E:
What is the most common type of antenna for GMDSS VHF?
None of the above
Horizontally polarized circular antenna
Long wire antenna
Both of the above
7-012F:
What advantage does a vertical whip have over a long wire?
It radiates equally well in all directions.
It radiates more signal fore and aft.
It radiates a strong signal vertically.
None of the above
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● = Review
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● = Incorrect answer
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